docs: def on_channel_flow(self, method):
          """When RabbitMQ indicates the connection is unblocked, set the state
          appropriately.
  
          :param pika.spec.Channel.Flow method: The Channel flow frame
  
          """
          if method.active:
              LOGGER.info('Channel flow is active (READY)')
              self.state = self.STATE_READY
              if self.on_ready:
                  self.on_ready(self)
          else:
              LOGGER.warning('Channel flow is inactive (BLOCKED)')
              self.state = self.STATE_BLOCKED
              if self.on_unavailable:
                  self.on_unavailable(self)